The patient is a 45-year-old male who presents with palpitations for the past 30 minutes. He denies chest pain, dizziness, or syncope. His vital signs are normal aside from tachycardia and he appears to be in no acute distress.              

View the ECG taken and consider what your diagnosis and next steps might be. Resolution of the case is described on the next page.

45-Year-Old Male with Palpitations
Figure 1.
(Case presented by Tom Fadial, MD, McGovern Medical School at UTHealth Houston Department of Emergency Medicine.)
A 45-Year-Old Male with Palpitations
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